Professur Maschinenelemente und Produktentwicklung

In the research project FVA 956I ‘Design Method for Internal Knurled Interference Fits’, detailed investigations were undertaken into the static and cyclical transmission behaviour of internal knurling press fits. This shaft-hub connection is characterized by pressing a hardened hub with internal knurling onto an oversized, softer shaft, creating a form-fit and friction-fit contact zone. The high-performance potential of this connection is complemented by a high-volume utilisation value and offers considerable advantages, particularly when using thin-walled hubs (e.g., combination of a thin-walled, hardened gear wheel with a drive shaft). As part of the collaboration with the Chair of Forming Technology (TUC), the experimental and numerical results were integrated into an analytical design method. In addition, a simulation guideline was developed for the precise dimensioning of the connection, which makes it possible to fulfil application-specific performance requirements while considering the space restrictions in the drive train.